Also listed on Cubic Tech Corporation, an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Aug 3, 2031 · High confidence
20-year base term ends Aug 3, 2031
Held by DSM Protective Materials B.V.
Filed Dec 27, 2012 as application 13/727,919 · Granted Aug 12, 2014
Base term, 20 years from filing
Today
2011
2031
Clock starts
Aug 3, 2011
Aug 3, 2011
Term ends
Aug 3, 2031
Aug 3, 2031
Granted
Aug 12, 2014
Aug 12, 2014
base term
fee events
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
None
Term adjustment
No prosecution delay on this record.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 8,343,574, to Aug 3, 2031. The term already ends on or before that date, so the cap shortened nothing.
3 of 3
Maintenance fees paid
Three maintenance fees fall due, at 3.5, 7.5 and 11.5 years from grant. This counts the ones the record shows paid.
4
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
This patent's term is its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. All three maintenance fees are recorded paid; no more fees are due. Confidence: High. from the record
How we calculated this date
One row per rule, each showing its own input and what it did to the date. A step we could not verify says so instead of resolving itself.
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Aug 3, 2011, when application 13/197,741, the earliest non-provisional in its chain, was filed (this one was filed Dec 27, 2012) | Aug 3, 2031 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | None on file | no change | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 8,343,574) | resolves to Aug 3, 2031, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Aug 3, 2031 | High confidence |
This family
| US 8,343,574 | In force Aug 2031 | Aug 2031 |
| US 8,802,189 | this patent Aug 2031 | Aug 2031 |
| US 9,079,218 | In force Aug 2031 | Aug 2031 |
| US 9,339,842 | In force Aug 2031 | Aug 2031 |
The applications whose file history this site holds. The family may have others.
Assignments
Assignment documents as recorded at the USPTO, oldest first, with the reel and frame each was recorded at. A recorded assignment is a filed document, not a statement of current ownership, and the absence of a later one is not evidence that the last one still stands.
| Recorded | Assignor | Assignee | Conveyance |
|---|---|---|---|
| Jan 9, 2014 Reel 31927, frame 899 | Downs, Roland Joseph; Adams, Christopher Michael; Holweger, Jon Michael | Cubic Tech Corporation | Assignment of Assignor's Interest |
| Oct 28, 2022 Reel 61579, frame 501 | Cubic Tech Corporation | Wells Fargo Capital Finance, LLC, as Agent | Security Interest |
| Oct 28, 2022 Reel 61799, frame 424 | Cubic Tech Corporation | Citibank, N.A., as Administrative Agent | Security Agreement |
| May 4, 2023 Reel 63540, frame 203 | Cubic Tech Corporation | DSM IP Assets B.V. | Assignment of Assignor's Interest |
| Sep 30, 2023 Reel 65082, frame 600 | DSM IP Assets B.V. | DSM Protective Materials B.V. | Assignment of Assignor's Interest |
| Jun 24, 2025 Reel 71704, frame 194 | Wells Fargo Capital Finance, LLC, as Administrative Agent | Cubic Tech Corporation | Release of Security Interests in Patents Recorded at Reel 061579, Frame 0501. |
Sources
Google Patents · The patent document at USPTO · Assignment records at USPTO
USPTO account required: This application in Patent Center · USPTO's maintenance fee lookup
Maintenance fee events come from USPTO's own fee records. Its fee lookup asks for the patent number and the application number.
What's changing
Aug 2031
Term ends Aug 3, 2031. No further fees fall due before then
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 8,343,574, ends no earlier than this term, so it caps nothing.
Citations
11
later US patents cite this one
That is above the median of utility patents granted in 2014 in our data, the only group it is compared against.
How we rank
Every date shows its work: the base term, any term adjustment or extension, any disclaimer cap, and the maintenance fee record, each with a confidence tier. How this record was built
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.
In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.